| Title |
A Study on the Improvement of Insulation Cover for Instrument Transformer Used in Power Receiving System of Construction Sites |
| Authors |
Hyeong-Joon KIl ; Chung-Seog Choi ; Hyang-Kon Kim ; Woon-Ki Han ; Bok-Hee Lee |
| Keywords |
Electrical disaster ; Insulation cover ; Electric field ; Utility model patent |
| Abstract |
There are many risk factors of electrical shock caused by a minimum of protective devices, loose working environments, deterioration of installations at temporary power installations of construction sites. An insulation cover for instrument transformer(MOF) used in 22.9[kV] class power receiving system hasn"t shown good performance in terms of electrical safety because of short clearance between insulation cover and each input and output wire junction part. The insulation cover is easily moved by outside environment as wind or rain because of different size between insulation cover and busing, also can be leaded to breakdown by tracking. Therefore, we have proposed the insulation cover which effectively can prevent from electrical disaster in this paper, and a utility model patent had been registered already. To decrease the electric field concentrated on specific part, we had roundly designed the shape of insulation cover and the clearance between cover and live part was adjusted to be longer than the existing thing. The proposed insulation cover was evaluated by using the electric field solution program. |